seek standalone hellschreiber units
Charon wrote:
wrote in message
...
for communication over a copper pair into an extremely noisy area,
manned by a non-code-proficient mechanic, at sea with intense
vibration.
How does the copper pair feed out over the sea? Is there
a ginormous drum on the clifftops, perhaps?
where does the query mention over the sea ?
merely "at"
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